Cadillac CTS I (2002-2007) ppl serial data Wiring diagrams

23 55 HI SPD GMLAN + HI SPD GMLAN - APPROXIMATELY AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE ELEC PRNDL FUSE ELECTRONIC PRNDL ENGINE CONTROL MODULE (ECM) (FRONT OF RIGHT VALVE COVER) GRY WIRE HOT WHEN MINI ACCESSORY RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) INSTRUMENT PANEL CLUSTER LT GRN WIRE ORG/BLK WIRE P/N P/N SIG PPL PPL PPL 1807 1807 SERIAL DATA SERIAL DATA PPL PPL 4 6 PPL PPL 5 8 PPL PPL PPL 24 26 25 PPL SERIAL DATA PPL/WHT WIRE RADIO REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) SERIAL DATA SERVICE TRANSMISSION TRANS HOT IDLE ENGINE SPLICE PACK TAN/WHT WIRE TRANSMISSION INTERNAL MODE SWITCH TRS SIG A TRS SIG B TRS SIG C TRS SIG P UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE YEL WIRE

23 55 HI SPD GMLAN + HI SPD GMLAN - APPROXIMATELY AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE ELEC PRNDL FUSE ELECTRONIC PRNDL ENGINE CONTROL MODULE (ECM) (FRONT OF RIGHT VALVE COVER) GRY WIRE HOT WHEN MINI ACCESSORY RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) INSTRUMENT PANEL CLUSTER LT GRN WIRE ORG/BLK WIRE P/N P/N SIG PPL PPL PPL 1807 1807 SERIAL DATA SERIAL DATA PPL PPL 4 6 PPL PPL 5 8 PPL PPL PPL 24 26 25 PPL SERIAL DATA PPL/WHT WIRE RADIO REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) SERIAL DATA SERVICE TRANSMISSION TRANS HOT IDLE ENGINE SPLICE PACK TAN/WHT WIRE TRANSMISSION INTERNAL MODE SWITCH TRS SIG A TRS SIG B TRS SIG C TRS SIG P UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE YEL WIRE

3.2L/3.6L 5.7L BACKLIGHT LAMPS CTRL BATTERY BATTERY GROUND BACKLIGHT LAMPS CTRL GROUND BLK WIRE BLK/WHT WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DIMMING FUSE FRONT PASSENGER DOOR LOCK SWITCH FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) FRONT PASSENGER WINDOW SWITCH FUSE BLOCK (STEERING COLUMN) (TAPED TO STEERING COLUMN HARNESS) GROUND HAZARD SWITCH ILLUMI- NATION LAMP LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LEFT REAR WINDOW SWITCH LEFT STEERING WHEEL CONTROLS PPL PPL SERIAL DATA RED/WHT WIRE RIGHT REAR DOOR MODULE (ON RIGHT REAR DOOR, UNDER DOOR TRIM PANEL) RIGHT REAR WINDOW SWITCH RIGHT STEERING WHEEL CONTROLS SERIAL DATA WHEEL MODULE WHT WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DOOR LOCKS SYSTEM DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER DOOR SWITCH ASSEMBLY (DDSA) GROUND HOT AT ALL TIMES JOINT CONNECTOR LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LT BLU WIRE ORG/ WIRE ORG/BLK WIRE PPL 10 8 4 SERIAL DATA GROUND RELEASE SWITCH PPL SERIAL DATA REAR COMPARTMENT LID AJAR SWITCH SIGNAL REAR COMPARTMENT LID RELEASE ACTUATOR (CENTER OF REAR COMPARTMENT LID) REAR COMPARTMENT LID RELEASE ACTUATOR SUPPLY VOLTAGE REAR COMPARTMENT LID RELEASE SWITCH REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) RED/WHT WIRE RELAY CTRL RIGHT REAR TRUNK DIODE FUSE BLOCK (BELOW RIGHT REAR SEAT) SWITCH SIGNAL TAN WIRE TRK DR REL SOL RELAY MICRO TRUNK DOOR RELEASE FUSE WHT WIRE